// import { constantRoutes } from '/src/router'
import { getRouters } from '/src/api/menu';
// import Layout from '/src/layout/index'
// import ParentView from '/src/components/ParentView';
// import InnerLink from '/src/layout/components/InnerLink'

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: [],
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes;
      // state.routes = constantRoutes.concat(routes)
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      // state.defaultRoutes = constantRoutes.concat(routes)
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      // 顶部导航菜单默认添加统计报表栏指向首页
      const index = [
        {
          path: 'index',
          meta: { title: '统计报表', icon: 'dashboard' },
        },
      ];
      state.topbarRouters = routes.concat(index);
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes;
    },
  },
  actions: {
    // 生成路由
    GenerateRoutes_Action({ commit }) {
      return new Promise((resolve) => {
        // 向后端请求路由数据
        getRouters().then((res) => {
          const sdata = JSON.parse(JSON.stringify(res.data));
          const rdata = JSON.parse(JSON.stringify(res.data));
          const sidebarRoutes = filterAsyncRouter(sdata);
          const rewriteRoutes = filterAsyncRouter(rdata, false, true);
          rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true });
          commit('SET_ROUTES', rewriteRoutes);
          commit('SET_SIDEBAR_ROUTERS', sidebarRoutes);
          // commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(sidebarRoutes))
          commit('SET_DEFAULT_ROUTES', sidebarRoutes);
          commit('SET_TOPBAR_ROUTES', sidebarRoutes);
          resolve(rewriteRoutes);
        });
      });
    },
  },
};

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter((route) => {
    if (type && route.children) {
      route.children = filterChildren(route.children);
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      // if (route.component === 'Layout') {
      //   route.component = Layout
      // } else if (route.component === 'ParentView') {
      //   route.component = ParentView
      // } else if (route.component === 'InnerLink') {
      //   route.component = InnerLink
      // } else {
      //   route.component = loadView(route.component)
      // }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type);
    } else {
      delete route['children'];
      delete route['redirect'];
    }
    return true;
  });
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = [];
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView') {
        el.children.forEach((c) => {
          c.path = el.path + '/' + c.path;
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c));
            return;
          }
          children.push(c);
        });
        return;
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path;
    }
    // el.component = () => import("/src/views/Menu.vue");
    children = children.concat(el);
  });
  return children;
}

export const loadView = (view) => {
  // 路由懒加载
  return (resolve) => require([`@/views/${view}`], resolve);
};

export default permission;
